When I view a page view report with my_custom_dimension as a secondary dimension, or when I create a custom report with my_custom_dimension against pageviews, I would expect nothing to show up since there should be nothing in my_custom_dimension and yet, everyday I see a few entries in there.

Vast majority is filtered out, when I compare to my unfiltered view, but there is some.

- Visit your website by yourself (to make sure the next time you should be seen as a returning visitor)- Set up a brand new test view with the filter applied- Add your own IP address (include filter)- Wait for a while and visit your website one more time

Re: Search and Replace Filter works 99% of times with custom dimension

Maybe I'm misunderstanding how GA works, and it's hard to find solid documentation around some of the more specific topics, but I would expect that since the custom dimension is set at a Session level (and not at the User level), then for every hit that comes in with the custom dimensions, it should be filtered out. If it were set at a User level I can see how that would make the filter not work for returning visitors.

Could you please elaborate on how the returning visitors would affect the filters here? I'm asking to make sense of how GA works for my own peace of mind and for future reference.